The online campaign to become Pennsylvania’s next Senator

Big personalities on both sides of the aisle drive major online engagement

Tuesday’s primary election for U.S. Senate in Pennsylvania brings to a close a chaotic process that has seen millions of dollars in ad spending across the commonwealth. The open seat, currently held by retiring Republican Sen. Pat Toomey, is Democrats’ best chance to pick up a new Senate seat and retain their majority on Capitol Hill. 

On the Left, Democ…